Size.
If the lawn mower is run without oil, the connecting rod bearing will heat and score, or even "weld" to the crankshaft, causing major damage.
Engine wear and damage can occur.
If all oil the mower will not start. If only a little oil, the mower may start but run rough and smoke very much.
No for your lawn mower you will just need regular lawn mower oil.
Yes. Have done it for over 30 years.
On a push mower you take the oil cap off our drain plug out (which ever it has) and tip the mower on its side with the carburetor up. Once the oil is drained, refill it. Riding lawn mowers have an oil drain bolt on the bottom of the engine and you change the oil and filter kind of like a car
You will burn the motor up, which will be a very costly repair.
Oil is a lubricant that helps to keep an engine running. If a person runs a lawn mower without oil, the mower will run, but it will cause problems like stalling out, or worse. +++ Its engine will run, but only for a very short time before seizing, probably ruining it.
where do you put the oil at for a john deere 317 riding lawn mower and what brand of oil
Nothing will happen. You can do that if your wish with small air cooled engines.
Yes, you may use car oil in your lawnmower but it is not recommended to use multiweight oil. Use 30 weight only. Reason; the chemicals in multiweight won't cool the aircooled engine as well as 30 weight. I like Castrol 30 weight. There is no difference in oil for a lawn mower and oil for an automobile.